Hey there, and
Have you ever considered calorie counting? It's consistent...just count the calories you eat, try to stay within a target number (at your height and weight, I would probably start out in the 1800-2000 cals/day range). You can eat what you want so long as you calculate the calories in it, and calories are widely available (on food packages, or online databases like Fitday or Sparkpeople...Googling "calories in <food>" will usually get you what you need.
The nice thing is that, if you're counting calories, a lot of other things come into play semi-automatically. You will learn portion control by figuring out your portions and the calories in them. You'll most likely learn to replace high-calorie, junky foods with lower-calorie, nutritious foods, if only because you'll be hungry when you eat the high-cal ones since you can't eat as much in your calorie allowance.
So calorie counting is pretty simple - you start with a calorie range (again, 1800-2000 might be a good place to start), count, wait a few weeks, and evaluate. Losing weight? Great, stay at the calorie level you are at. Losing really fast and/or hungry all the time? Bump up the calorie level. Not losing? Go a bit lower or add some more exercise. Eventually you find the level that works well for you, and then it becomes pretty automatic. We have a great calorie counters forum here that you might want to check out.
We also have support for a ton of other plans...South Beach, other low-carb programs, and most of the other major ones all have a presence. You might also want to look around in those forums to see if something appeals to you.
Whatever you choose, just jump in, get started, and post! I can't wait to get to know you better!